When should I plant Sibul in Zone 5b?

Start Sibul seeds indoors around Feb 17. Transplant outdoors after Mar 31. Expect first harvest around Jun 19.

What is the last frost date for Zone 5b?

The average last spring frost date for Zone 5b is Apr 28. The first fall frost averages Oct 8, giving a 163-day growing season.

Can I grow Sibul in Zone 5b?

Yes. Sibul needs 110 days to harvest. Zone 5b has a 163-day growing season, which is sufficient.

🧅

🧅 Growing Sibul in Zone 5b

Zone 5b has cold winters and a moderate growing season. Timing is key for Sibul in this zone. Viimane öökülm: Apr 28. Esimene öökülm: Oct 8.

Planting Calendar

Indoor

Outdoor

Harvest

Feb 17Oct 8

Season: Apr 28 – Oct 8 (163 päeva)

Tsoon5b

Viimane öökülmApr 28

Esimene öökülmOct 8

Hooaeg163 päeva

Saak110 päeva

PäikeTäispäike

When to Plant Sibul in Zone 5b

Start Seeds Indoors: Feb 17

Start Sibul seeds indoors around Feb 17 (10 nädalat enne viimast külma). Optimal germination temperature: 70F. Germinates in 7-14 days.

Transplant Outdoors: Mar 31

Transplant Sibul seedlings outdoors after Mar 31. Wait until soil temperature reaches 45F. Space plants at 9/m² (10cm vahekaugus). Harden off plants for a week before moving outside.

Harvest: Jun 19

First harvest approximately Jun 19 (~80 päeva from transplant). Continue harvesting until first frost (Oct 8).

Kaaslasistutamine

✅ Maasikad✅ Kapsas✅ Peedi✅ Salat✅ Porgandid✅ Tomatid

❌ Oad❌ Herned

Sibul in Other Zones

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

Plan Your Garden Sibul

Track Sibul from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

Start Free Sibul Growing Guide